A magnetoelectric encoder with a reducer and an angle calculation method thereof

By introducing a reducer mechanism into the magnetoelectric encoder, thermally insulating and amplifying the rotation speed, the problems of permanent magnet demagnetization and insufficient measurement accuracy in the prior art are solved, and higher working reliability and measurement accuracy are achieved.

CN115790674BActive Publication Date: 2025-03-18WUXI HANGHU PRECISION MASCH CO LTD
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Patent Information

Application Number
CN202211684597.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-27
Publication Date
2025-03-18
Estimated Expiration
2042-12-27

AI Technical Summary

Technical Problem

Existing magnetoelectric encoders are prone to demagnetization of permanent magnets in high heat environments, and the measurement accuracy is difficult to improve when the speed is insufficient, and the speed of the test object is greatly affected.

Method used

A magnetoelectric encoder with a reducer is designed to insulate the permanent magnet through the reducer mechanism, and the speed amplification effect of the reducer at the measurement end is used to improve the speed measurement resolution, thereby improving the measurement accuracy.

Benefits of technology

It effectively isolates the heat on the power input shaft, prevents the permanent magnet from demagnetizing, improves the working reliability of the encoder, and improves the measurement accuracy through speed amplification.

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Abstract

The invention discloses a magnetoelectric encoder with a reducer, comprising a magnetic field generating unit and a signal receiving and processing unit, wherein the magnetic field generating unit is connected to a detection target via a power input shaft, and the power input shaft is indirectly connected to a permanent magnet via a reducer mechanism; the permanent magnet rotates under the drive of the reducer mechanism and corresponds to the signal receiving and processing unit; the reducer structure can isolate the heat generated from the operation on the power input shaft, and at the same time make the permanent magnet farther away from the power input shaft, thereby preventing the permanent magnet from being demagnetized due to heat, and greatly improving the operating reliability of the encoder; at the same time, the reducer mechanism can convert the slower rotation speed of the power input shaft into a faster rotation speed, thereby improving the rotation speed measurement resolution through rotation speed conversion when the measurement accuracy of the signal receiving and processing unit itself remains unchanged, thereby improving the measurement accuracy of the encoder.
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